Exposure can be defined as the amount of light that reaches your cameras sensor in a photo. A longer exposure will give you a brighter image, and of course a shorter exposure will give you a darker one.

Lately there has been a flood of high megapixel coming onto the market. These big numbers though can be deceptive and one of the worst things you can do is just go for the highest one. This guide will help you understand what a megapixel is and how many you need.